 After World War II ended, she operated with mine groups at Okinawa and, after 29 January 1946 at Sasebo, Japan as those groups cleared the waters to allow safe passage to both military and merchant shipping.Returning to the United States later in the year, she decommissioned 11 December 1946 at San Diego where she remained berthed, into 1969, as a unit of the Pacific Reserve Fleet.After entering the Reserve Fleet, YDG-9 was reclassified ADG-9 on 1 November 1947, and named "Magnet" on 1 February 1955, the third U.S. Navy ship of the name.